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BOTANY :: 2002 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Grass stem elongates after initial growth due to : (1) Lateral meristem (2) Secondary meristem (3) Intercalary meristem (4) Apical meristem A simple tissue with mechanical and physiological functions in a young dicotyledonous plant is (1) Parenchyma (2) Collenchyma (3) Sclerenchyma (4) Meristematic tissue The cells are chlorophyllous, fewer in number, unique in shape and inner walls thick. This description fits into: . (1) Subsidiary cells (2) Guard cells (3) Passage cells (4) Bulliform cells Endodermis is a part of : (1) Epidermal tissue system (2) Extrastelar ground tissue system (3) Intrastelar ground tissue system (4) Vascular tissue system The type of vascular bundles in the stem of Dracaena (1) Radial (2) Bicollateral (3) Amphicribal (4) Amphivasal Protoplast lacks : (1) Cytoplasm (2) Nucleus (3) Plasma membrane (4) Cell wall Development of haploid plants from totipotent pollen is called: (1) Androgenesis (2) Parthenocarpy (3) Emasculation (4) Somatic hybridization Identify the vector suitable to clone long fragments of DNA : (1) Phage vectors (2) Bacterial plasmids (3) Yeast plasmids (4) Cosmids In Spirogyra, a brief period of tetranucleate condition is found in : (1) Holdfast (2) Gametangium (3) Vegetative cell (4) Germinating zygote Failure of gametangial fusion in Rhizopus lends to 'the formation of (1) Zygospore (2) Parthenospore (3) Chlamydospore (4) Sporangiospore Number of "peristomial teeth in Funaria capsule (1) 16 (2) 32 (3) 64 (4) 128 The brown hairs present at the base of the petiole of Pteris are called : (1) Setae (2) Ramenta (3) Spines (4) Stipules In Cycas, diploxylic condition is found in: (1) Stem (2) Root (3) Corolloid root (4) Leaflet Genetic recombination by transduction in bacteria was discovered first in this (1) Salmonella typlimurium (2) Escherichia coli (3) Streptococcus pneumoniae (4) Agrobacterium tumefaciens The viruses with nucleic acid but without protein coat are known as : (1 ) Viroids (2) Virions (3) Capsomers (4) Prions An example .of physiological xerophyte is : (1) Salvinia (2) Euphorbia (3) Salicornia (4) Agave Clay particles are : (1) Negatively charged (2) Positively charged (3) Neutral (4) With no charge The plant breeder who developed the first artificial hybrid ? (1) Mendel (2) Swaminathan (3) Maheshwari (4) Fairchild 19. 20. 21. 22. 23. 24. 25. 26. 27. Xanthomonas citri posses: (1) Tuft of flagella (2) Bipolar flagella (3) Single polar flagella (4) No flagella In pedigree method of hybridization up to which generation, the plants are tested and released for cultivation ? (3) F4 generation . (4) F6 generation (1) F2 generation (2) F3 generation An abnormal increase in the cell number due to the infection is called: (1) Hyperplasia (2) Hypertrophy (3) Hypoplasia (4) Necrosis Which one of the following is not associated with ascent of sap in tall trees? (1) Cohesion and adhesion of water molecules (2) Continuity of water column (3) Pressure in tracheary elements (4) Transpiration pull The risk of Spoilage is less in salted pickles because of : (1) Guttation (2) Plasmolysis (3) Imbibition (4) Diffusion Sleeping movements in Samanea saman leaves are regulated by (1) Nitrogen (2) Potassium (3) Phosphorus (4) Magnesium Which of the following is needed both in photosynthesis and respiration? (1) Chlorophyll (2) CO2 (3) O2 (4) Cytochromes In photosynthetic electron transport system, manganese ions are associated with (1) Oxygen evolving complex (2) CF0- CF1 complex (3) Cytochrome b6.f complex (4) Plastoquinone The microelement required for the synthesis of IAA is represented in its ionic form as a cofactor in this enzyme: 28. 29. 30. 31. 32. 33. (1) Catalase (2) PEP carboxy kinase (3) Carbonic anhydrase (4) Nitrogenase When malic acid is the respiratory substance: (1) The amount of CO2 released is more than O2 consumed (2) The amount of CO2 released is less than O2 consumed (3) The amount of CO2 released is equal to O2 consumed (4) CO2 is not released Natural auxins are synthesised from the amino acid : (1) Methionine (2) Glycine (3) Lysine (4) Tryptophan Exposure to light inhibits the process of germination in the seeds of the following plant : (1) Allium (2) Laduca (3) Capsella (4) Tobacco The taxon 'Pentoxylae' was reconstructed by (1) M.O.P. Iyengar (2) Birbal Sahni (3) K.C. Mehta (4) P.Maheshwari Which one of the following institutes achieved the production of chrysanthemum varieties with prolonged blooming periods (1) FRI (2) CSIR (3) NBRI (4) CIMAP A plant with specialized epidermis for absorption· of moisture from the atmosphere is : (1) Avicennia (2) Rhizophora (3) Vanda (4) Jussiaea 34. Which one of the following has thorns, bearing leaves and flowers on them? (1) Duranta (2) Artabotrys (3) Carissa (4) Bougainvillea 35. A leafy vegetable which has ochraceous stipules : (1) Platanus (2) Amaranthus (3) Mentha (4) Rumex Alternate phyllotaxy~ in which the sixth leaf lies above the first leaf after completing two circles is known as : (1) Distichous (2) Tristichous (3) Pentastichous (4) Octastichous . In Cyathium inflorescunce, the ratio between male and female flowers Is : (1) One: Many (2) Many: One (3) One: One (4) One: Two In obdlplostemonous androecium the stamens are arranged in : (1) One whorl and alternate with petals (2) Two whorls, with outer whorl alternating with the petals (3) Two whorls, with outer whorl opposite to the petals (4) One whorl and opposite to the petals Gloriosa superba is a good example of one of the following : (1) Heterostyly (2) Cleistogamy (3) Self-sterility (4) Herkogamy The term scutellum refers to : (1) Residual nucellus of pepper. seeds (2) Single cotyledon of cereals (3) Aril of Trianthema (4) Outgrowth of pulse seeds In which plant, two curved hooks are formed on the seed ? (1) Xanthium (2) Martynia (3) Tribulus (4) Ricinus In pulses the proteins are stored in : (1) Endosperm (2) Cotyledons (3) Pericarp (4) Seed coat In Bentham and Hooker's classification the wayof arrangement of the three series of polypetalae reflects this gradual evolution of flower from : (1) Dichlamydeous to Monochlamydeous condition (2) Apocarpy to Syncarpy (3) Hypogyny to Epigyny (4) Bisexuality to Unisexuality In the flowers of Fabaceae, one of the following immediately encloses the essential organs (1) Anterior petals (2) Posterior petal (3) Lateral petals (4) Sepals The characteristic fruit type 'In Asteraceae is : (1) Carcerulus (2) Capsule (3) Cypsela (4) Caryopsis Night queen and Day king belong to one of the following genera : (1) Sesbania (2) Chrysanthemum (3) Cestrum (4) Lilium The underground stem of this genus is a rhizome : (1) Allium (2) Gloriosa (3) Scilla (4) Lilium When are the glogi bodies of a cell made non-functional ? (1) Spindle apparatus is not formed (2) Nuclear membrane does not disappear (3) Cytokinesis is not completed (4) Chromatids are not formed Identify the trisaccharide in the following: (1) Mannose (2) Maltose (3) Raffinose (4) Galactose Kryotype means a : (1) single (haploid) set of chromosomes of an organism (2) diagrammatic representation of the chromosomes . 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. (3) genes constituting a single set of chromosomes (4) type of nucleus of an organism (1) 3 (2) 2 (3) 2 (4) 2 (5) 4 (6) 4 (7) 1 (8) 4 (9) 4 (10) 2 (11) 2 (12) 2 (13) 4 (14) 1 (15) 1 (16) 3 (17) 1 (18) 4 (19) 3 (20) 4 (21) 1 (22) 3 (23) 2 (24) 2 (25) 4 (26) 1 (27) 3 (28) 1 (29) 4 (30) 1 (31) 2 (32) 3 (33) 3 (34) 1 (35) 4 (36) 3 (37) 2 (38) 3 (39) 4 (40) 2 (41) 2 (42) 2 (43) 3 (44) 1 (45) 3 (46) 3 7) 2 (48) 3 (49) 3 (50) 1